Check the receiver's rules first
Look for maximum file size, accepted PDF versions, password restrictions, number of files allowed, naming rules and whether scans must be searchable. A file can be technically valid and still fail a specific portal rule.
If the portal has a total packet limit, add all files together before uploading. If it has a per-file limit, split unrelated documents into clearly named files instead of forcing everything into one large PDF.
Open the PDF like a reviewer
Use a normal PDF viewer and read the first page, middle pages and final page. Confirm that the title page, signature pages, attachments and page order match the requested checklist.
Zoom to 100 percent and 200 percent for small details. Dates, stamps, QR codes, handwritten notes and financial totals are the first things that become unreadable after aggressive compression.
Look for hidden submission problems
Editable form fields, comments, metadata, passwords and attachments can remain inside a PDF even when the page looks clean. Save a sharing copy and remove anything the receiver does not need.
Search for names, account numbers and redacted words before sending. If covered text is still searchable or selectable, the document was not actually redacted.
Keep an audit copy
Keep the original file and the exact submitted copy in separate folders. Use filenames with the document type, person or project, and date. That makes it easier to answer questions later without guessing which version was sent.
For legal, immigration, school, medical, tax or financial uploads, use this checklist as preparation and confirm the final rules with the organization receiving the document.